Fix an overread in the slice map

After incrementing the macroblock position in ih264e_update_proc_ctxt,
the slice index of the next macroblock is read. The value that is read
isn't actually used, but make sure that the array is large enough to
avoid overreads.

Change-Id: I44ddb49773244c7d1e404199fc57a9e30a8959e0
1 file changed